Abstract:
:We found that rhabdomyosarcoma (RMS) subcellular membranes contain sialyltransferase activities for LcOse4Cer and GgOse4Cer acceptors. Chromatographic analyses and neuraminidase lability of the sialyltransferase products indicated that the principal site of sialylation was the non-reducing terminal galactosyl moiety. In order to control for the effects of cell density in culture, metastatic S4T18 RMS cells and nonmetastatic F9-4/21 RMS cells were harvested at 2 X 10(4) to 6 X 10(4) per cm2 prior to analyses. Irrespective of metastatic potential, we found that sialyltransferase-specific activities were influenced by cell densities. F9-4/21 cells, for example, at a density of 6 X 10(4), produced membranes with sialyltransferase-specific activities to LcOse4Cer 1.9-fold higher than cells at 2.1 X 10(4)/cm2. Metastatic potential (predetermined in vivo) appeared to be correlated with an accelerated effect of cell density on the sialyltransferase activity to LcOse4Cer. Metastatic S4T18 cells at 6.3 X 10(4)/cm2 yielded membranes with sialyltransferase-specific activities 5.4-fold higher than membranes from cells at 1.9 X 10(4)/cm2. Conversely, fucosyltransferase activities in the presence of LcOse4Cer were highest in non-metastatic F9-4/21 cells at low cell densities. Quantitative analyses of monosialoganglioside fractions of RMS cells were in agreement with the sialyl-transferase studies. HPLC and HPTLC analyses demonstrated the presence of glucosamine-containing monosialoganglioside with Rf identical with the radioactive products of LcOse4Cer sialylation, which increased 4.5-fold on a per mg protein basis as cell densities increased in S4T18 cells in culture from 1.9 X 10(4)/cm2 to 6.3 X 10(4)/cm2. Plasma membrane marker Na+, K+, ATPase-specific activity also increased in RMS metastatic cells in a manner comparable to that described for the sialyl-transferase activity to LcOse4Cer. Our results suggest that metastatic potential is expressed in the rate of sialylation at specific membrane sites of RMS intercellular contact. We propose a process of selection for metastasis whereby specific cell surface non-reducing galactosyl termini are recognized by intercellular transferases and lectins in the primary tumor, and the corresponding labile sialylated sites (on disseminated cells) are recognized by host neuraminidases.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Liepkans VAdoi
10.1002/ijc.2910450531subject
Has Abstractpub_date
1990-05-15 00:00:00pages
961-7issue
5eissn
0020-7136issn
1097-0215journal_volume
45pub_type
杂志文章abstract::Cells from reticulum-cell sarcomas (RCS), tumors with a probable B-cell origin in the SJL/J mouse strain, induced a high degree of proliferation in O-bearing syngeneic lymph-node and thymus cells obtained from young non-tumours mice. Although of considerably lower magnitude, a proliferation of SJL/J thymus cells to sy...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910140615
更新日期:1974-12-15 00:00:00
abstract::The matrix metalloproteinase (MMP) family of proteins mediates various cellular pathways, including apoptosis and angiogenesis. Polymorphisms of MMP genes are associated with increased esophageal adenocarcinoma (EAC) risk. Gastroesophageal reflux disease (GERD) is an established EAC risk factor. We examined whether MM...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.27541
更新日期:2012-12-01 00:00:00
abstract::Although the existence of a humoral response against tumor-associated antigens is well appreciated, a systematic analysis of its possible induction by the tumor remains missing. We compared the specific IgG response of Stage IV melanoma patients during vaccination. Patients had been treated within 2 clinical trials wi...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.11537
更新日期:2004-01-10 00:00:00
abstract::Hodgkin and Reed-Sternberg (H and RS) cells are generally considered to be the neoplastic cells of Hodgkin's disease (HD); however, such cells are found only in a minority of HD lesions. Very few data have so far been published on the cytogenetic abnormalities in HD. An analysis of unknown genetic aberrations has only...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19990719)82:2<250::aid-ijc
更新日期:1999-07-19 00:00:00
abstract::We evaluated the therapeutic potential of the replication competent vector VA7-EGFP, which is based on the avirulent Semliki Forest virus (SFV) strain A7 (74) carrying the EGFP marker gene in an orthotopic lung cancer tumor model in nude mice. We have previously shown that this oncolytic vector destroys tumor cells ef...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.23646
更新日期:2008-10-01 00:00:00
abstract::Germline variation in the TP53 network genes PRKAG2, PPP2R2B, CCNG1, PIAS1 and YWHAQ was previously suggested to have an impact on drug response in vitro. Here, we investigated the effect on breast cancer survival of germline variation in these genes in 925 Finnish breast cancer patients and further analyzed five sing...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.27884
更新日期:2013-05-01 00:00:00
abstract::We have previously identified a region containing 16 CpGs within the MGMT CpG islands which is critical for the transcriptional control of MGMT (Malley, Acta Neuropathol 2011). To investigate the patterns and incidence of MGMT methylation in astrocytic and oligodendroglial tumors, we quantitatively assessed methylatio...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.26499
更新日期:2012-09-01 00:00:00
abstract::We present an investigation of tumor pH regulation, designed to support a new anticancer therapy concept that we had previously proposed. Our study uses a tumor model of ras-transformed hamster fibroblasts, CCL39, xenografted in the thighs of nude mice. We demonstrate, for the first time, that genetic modifications of...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.26125
更新日期:2012-04-01 00:00:00
abstract::To identify genes associated with radioresistant oral squamous cell carcinoma (OSCC), we compared gene expression signatures between OSCC cell lines exhibiting radioresistance and cells with radiosensitivity after X-ray irradiation in a dose-dependent manner using Affymetrix GeneChip analysis with Human Genome-U133 pl...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.22561
更新日期:2007-05-15 00:00:00
abstract::A Kunitz-type protease inhibitor, bikunin, downregulates expression of uPA and its receptor uPAR at the mRNA and protein levels in several types of tumor cells. Our recent work showed that, using a cDNA microarray analysis, pregnancy-associated plasma protein-A (PAPP-A) is a candidate bikunin target gene. To clarify h...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.11700
更新日期:2004-04-10 00:00:00
abstract::Lung cancer is the leading cause of cancer mortality in the world. Although exposure to carcinogens is considered to be the main cause, genetic variation may contribute to lung cancer risk. Murine double minute 2, MDM2, is a key regulator of p53 activity and recently a polymorphism in the promoter region of the MDM2 g...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.21872
更新日期:2006-08-01 00:00:00
abstract::Our previous studies demonstrate that introduction of a approximately 70 cM region (now estimated at 63.75 Mb by the Human Genome Project) of human chromosome 12 into the highly metastatic Dunning rat prostate cancer cell line AT6.1 results in >30-fold (>/=90%) reduction in the number of overt metastases in spontaneou...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.11483
更新日期:2004-01-01 00:00:00
abstract::This article has been retracted at the request of: Editor-in-Chief and Co-author 'Restoring sensitivity to oxaliplatin by a novel approach in gemcitabine-resistant pancreatic cancer cells in vitro and in vivo' by Banerjee, S., Kong, D., Azmi, A. S., Wang, Z., Ahmad, A., Sethi, S. and Sarkar, F. H. The above article, p...
journal_title:International journal of cancer
pub_type: 杂志文章,撤回出版物
doi:10.1002/ijc.30271
更新日期:2016-11-01 00:00:00
abstract::An important feature of cytochrome P450 (CYP) 2B1 is its high ability to convert the prodrug cyclophosphamide (CPA) to therapeutically cytotoxic metabolites, resulting in interstrand DNA-cross-linking and cell death. We have examined whether and how the phosphorylation of CYP2B1 influences CPA metabolic activation in ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.1517
更新日期:2001-12-01 00:00:00
abstract::Markers of exposure to polycyclic aromatic hydrocarbons (urinary 1-hydroxypyrene-glucuronide) and aromatic amines (4-aminobiphenyl-hemoglobin adducts), as well as urinary mutagenicity, were measured in 47 healthy smokers and 50 nonsmokers. DNA adducts were determined by P32-postlabeling in the exfoliated bladder cells...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0215(19960126)65:3<314::AID-IJC
更新日期:1996-01-26 00:00:00
abstract::The E2F family of transcription factors plays a key role in the control of cell-cycle progression. Some family members may act as oncogenes, others as tumor-suppressor genes. The genetic changes and the expression of E2F-1 and -3 were examined in human gastric and colorectal carcinomas by Southern, Northern and Wester...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19990517)81:4<535::aid-ijc
更新日期:1999-05-17 00:00:00
abstract::The antigen-induced leukocyte adherence inhibition (LAI) test is an assay of cellular immune reactivity which was expected to offer a promising adjunct to currently available diagnostic and monitoring procedures in cancer patients. We have applied this assay to (1) 83 inpatients clinically suspected of having breast c...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910290306
更新日期:1982-03-15 00:00:00
abstract::Double-label immunofluorescence was used to monitor basement-membrane composition and integrity in 22 human colon polyps, 36 adenocarcinomas and 2 metastases. Cryostat sections were stained with polyclonal anti-laminin anti-serum combined with monoclonal antibodies (MAbs) to all major basement-membrane components (lam...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910500412
更新日期:1992-02-20 00:00:00
abstract::The variable domain of functional heavy chain antibodies (VHH) devoid of light chains, found in camels, constitute the smallest intact antigen-binding domain fragment. Two camel single-domain fragments, cAb-Lys2 and cAb-Lys3, recognizing an overlapping epitope of lysozyme with a dissociation constant of 2 nM and 65 nM...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.10212
更新日期:2002-03-20 00:00:00
abstract::Several lines of evidence suggest that long-term treatment with non-steroidal anti-inflammatory drugs may reduce the risk of colon cancer and the size and number of colonic polyps in patients with familial adenomatous polyposis. Aspirin has also been shown to inhibit cell proliferation in human tumor cell lines and to...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19971210)73:6<880::aid-ijc
更新日期:1997-12-10 00:00:00
abstract::Breast cancer is a common malignancy with current biological therapies tailored to steroid hormone (ER, PR) and HER2 receptor status. Understanding the biological basis of resistance to current targeted therapies and the identification of new potential therapeutic targets is an ongoing challenge. The PI3K pathway is a...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.24831
更新日期:2010-03-01 00:00:00
abstract::Pancreatic cancer is almost always fatal, in part because of its delayed diagnosis, poor prognosis, rapid progression and chemoresistance. Oncogenic proteins are stabilized by the Hsp90, making it a potential therapeutic target. We investigated the oxidative stress-mediated dysfunction of Hsp90 and the hindrance of it...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.27687
更新日期:2013-02-01 00:00:00
abstract::As a key enzyme in folate metabolism, the thymidylate synthase (TS) is important for the synthesis of nucleotides. Its polymorphisms may affect the TS gene expression and the susceptibility for Fluoropyrimidine (FU)-based chemotherapies. In this study, we assessed the relationship between the TS genotypes and clinical...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.25096
更新日期:2010-08-15 00:00:00
abstract::Ordinary lipomas are cytogenetically characterized by a variety of balanced rearrangements involving chromosome segment 12ql3-15, and atypical lipomatous tumors (ALT) by supernumerary ring chromosomes or giant markers known to contain amplified 12q sequences. In a series of 228 cytogenetically analyzed and histopathol...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0215(19960904)67:5<632::AID-IJC
更新日期:1996-09-04 00:00:00
abstract::Using radioiodinated Staphylococcus aureus protein A [125I]SPA to measure syngeneic, allogeneic and heterogeneic IgG bound to murine tumor cells, we performed a serological analysis of surface antigens of 8 solid tumors and 2 leukemias of BALB/c mice (3 chemically-induced colon carcinomas, 3 chemically-induced sarcoma...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910230317
更新日期:1979-03-15 00:00:00
abstract::Burkitt's lymphoma cells that vary in their phenotypic characteristics show significantly different degrees of susceptibility to radiation-induced apoptosis. Propensity to undergo apoptosis is reflected in the degradation of substrates such as DNA-dependent protein kinase but the status of bcl-2, c-myc and p53 has bee...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19980831)77:5<755::aid-ijc
更新日期:1998-08-31 00:00:00
abstract::Leukemia stem cells (LSCs) might originate from malignant transformation of normal hematopoietic stem cells (HSCs), or alternatively, of progenitors in which the acquired mutations have re-installed a dysregulated self-renewal program. LSCs are on top of a hierarchy and generate leukemia cells with more differentiated...
journal_title:International journal of cancer
pub_type: 杂志文章,评审
doi:10.1002/ijc.26318
更新日期:2011-11-15 00:00:00
abstract::Antibodies to HTLV-I have been detected in sera from 15 (2.0%) of 736 adult blood-donors in Nigeria, in 4 (20.0%) of 20 patients with chronic lymphatic leukaemia, 3 (10.0%) of 30 with non-Hodgkin's lymphoma, one of 12 with Burkitt's lymphoma and one of 7 with acute lymphoblastic leukaemia. The frequency of positivity ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910380605
更新日期:1986-12-15 00:00:00
abstract::Actin, a highly conserved protein comprising cell stress fibers and other cellular structures, is found in both the cytoplasm and nucleus of cells and responds to both epigenetic signals and altered gene expression occurring during tumorigenesis. We have previously shown that changes in the cytoplasmic F- and G-actin ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19970207)70:4<423::aid-ijc
更新日期:1997-02-07 00:00:00
abstract::TK is a pyrimidine metabolic pathway enzyme involved in salvage DNA synthesis. What roles TK may play in epithelial ovarian cancer and the relationships between TK and the other pyrimidine pathway enzymes remain unclear. We examined TK1 gene expression by RT-PCR and related it to gene expression of TS, TP and DPD in 6...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.10319
更新日期:2002-05-20 00:00:00